Cylinder Head Gasket
#1
Cylinder Head Gasket
Cylinder head gasket blew on the old (98) XKR. Quite surprised as it has only done 65,000 miles and has been well looked after. What was even more surprising was the gasket blew at the 3rd cylinder on the right bank, but the 2nd cylinder was also damaged and close to blowing. Left hand bank was the same, 2nd and 3rd cylinders distorted at the bottom and close to blowing. Is this normal? Do I have an underlying problem, like overheating? When replacing the gasket is it wise to use Jag parts or are after market parts ok?
Damage at bottom of 2nd and 3rd cylinders
Damage at bottom of 2nd and 3rd cylinders
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#8
I agree with the ding on the metal ring part, LH gasket was the same and hard to see how it could happen naturally. Could the heads have been over tightened and squashed them in towards the cylinder? Took, 5 snap on sockets and 2 pulled shoulder muscles to get them off. Don't know what coolant was but it was red and clean.
#10
I agree with the ding on the metal ring part, LH gasket was the same and hard to see how it could happen naturally. Could the heads have been over tightened and squashed them in towards the cylinder? Took, 5 snap on sockets and 2 pulled shoulder muscles to get them off. Don't know what coolant was but it was red and clean.
The very early AJ26 was still on green conventional and later were spec'd with the yellowish
coolant similar to that used by Mercedes. Those are the spec's which apply to the model
year range in which your vehicle sits.
A DEXCOOL equivalent was spec'd only in later years.
The change in spec coincided with the change to the MLS gasket.
DEXCOOL is known to contain a plasticiser which is not friendly to the
plastic sealing rings and the gasket material itself in composition
head gaskets.
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Well, RED or ORANGE ... you'll agree that the Jaguar ORANGE is a DEXCOOL derivative/variant?
#16
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RJ237 (02-21-2015)
#17
That number would give a cutoff of 2000/08/21 01:48 which would
coincide with start of US MY 2001.
That would happen to be in agreement with the more general statement
that one of the running changes for MY 2001 was a change to the MLS.
The statement would have been in either the engine repair course manual
which you so kindly provided, or one of those technical changes overviews
issued at the start of a model year.
#18
Red and orange are usually DEXCOOL types, but colour is not the defining factor.
The specification is the defining factor and will be found on the coolant jug label.
Whatever you do, be sure to fully flush the system before final refill to ensure that
you only have one type of coolant in the engine.
Sorry to add to your confusion.
My inquiries about coolant were simply along the lines of coolant and headgasket
combinations. It is my impression that vehicles with the earlier composition
head gasket seem to suffer head gasket failures more often, and it has been
noted that DEXCOOL is not friendly to composition head gaskets.
All of that my be completely irrelevant to you.
As a personal preference, I use a coolant similar to the yellow coolant,
Valvoline G-05 which is a BASF Glysantin formulation as commonly used
on Mercedes. I had to do a thorough flush at the time the changeover
was done.
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The specification is the defining factor and will be found on the coolant jug label.
Whatever you do, be sure to fully flush the system before final refill to ensure that
you only have one type of coolant in the engine.
Sorry to add to your confusion.
My inquiries about coolant were simply along the lines of coolant and headgasket
combinations. It is my impression that vehicles with the earlier composition
head gasket seem to suffer head gasket failures more often, and it has been
noted that DEXCOOL is not friendly to composition head gaskets.
All of that my be completely irrelevant to you.
As a personal preference, I use a coolant similar to the yellow coolant,
Valvoline G-05 which is a BASF Glysantin formulation as commonly used
on Mercedes. I had to do a thorough flush at the time the changeover
was done.
++
The following users liked this post:
Gander (02-21-2015)
#20
me too
started a new post here on the x100 board.. 01 xkr head gasket DIY help.. can you guys weigh in on it.. looking to do a single best practices thread on repairing this once and right... bob.. you keep coming up all over the place on these various head gasket threads.. can you bring your expertise to the new thread...
thanks guys
thanks guys
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